#define LLVM_CODEGEN_CRITICALANTIDEPBREAKER_H
#include "AntiDepBreaker.h"
+#include "RegisterClassInfo.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/SmallSet.h"
#include <map>
-#include <vector>
namespace llvm {
+class RegisterClassInfo;
class TargetInstrInfo;
class TargetRegisterInfo;
MachineRegisterInfo &MRI;
const TargetInstrInfo *TII;
const TargetRegisterInfo *TRI;
+ const RegisterClassInfo &RegClassInfo;
/// AllocatableSet - The set of allocatable registers.
/// We'll be ignoring anti-dependencies on non-allocatable registers,
/// corresponding value is null. If the register is live but used in
/// multiple register classes, the corresponding value is -1 casted to a
/// pointer.
- std::vector<const TargetRegisterClass *> Classes;
+ std::vector<const TargetRegisterClass*> Classes;
- /// RegRegs - Map registers to all their references within a live range.
+ /// RegRefs - Map registers to all their references within a live range.
std::multimap<unsigned, MachineOperand *> RegRefs;
+ typedef std::multimap<unsigned, MachineOperand *>::const_iterator
+ RegRefIter;
/// KillIndices - The index of the most recent kill (proceding bottom-up),
/// or ~0u if the register is not live.
SmallSet<unsigned, 4> KeepRegs;
public:
- CriticalAntiDepBreaker(MachineFunction& MFi);
+ CriticalAntiDepBreaker(MachineFunction& MFi, const RegisterClassInfo&);
~CriticalAntiDepBreaker();
/// Start - Initialize anti-dep breaking for a new basic block.
unsigned BreakAntiDependencies(const std::vector<SUnit>& SUnits,
MachineBasicBlock::iterator Begin,
MachineBasicBlock::iterator End,
- unsigned InsertPosIndex);
+ unsigned InsertPosIndex,
+ DbgValueVector &DbgValues);
/// Observe - Update liveness information to account for the current
/// instruction, which will not be scheduled.
private:
void PrescanInstruction(MachineInstr *MI);
void ScanInstruction(MachineInstr *MI, unsigned Count);
- unsigned findSuitableFreeRegister(MachineInstr *MI,
+ bool isNewRegClobberedByRefs(RegRefIter RegRefBegin,
+ RegRefIter RegRefEnd,
+ unsigned NewReg);
+ unsigned findSuitableFreeRegister(RegRefIter RegRefBegin,
+ RegRefIter RegRefEnd,
unsigned AntiDepReg,
unsigned LastNewReg,
- const TargetRegisterClass *);
+ const TargetRegisterClass *RC);
};
}